SKF 31312/DF tapered roller bearing

SKF 31312/DF belongs to tapered roller bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 31312/DF and any equivalents.

When a shaft has to handle radial and axial forces at the same time, a matched set of tapered roller bearings can be a practical answer. SKF supplies these pairs under the /DF suffix, which tells you the two bearings are arranged with their wide faces toward each other in a self-aligning configuration. MR Industrial Accessories stocks this SKF line for maintenance and repair work across the United States and Latin America.

Reading the code is straightforward. The base number identifies the series and size, while /DF marks the assembly as a matched pair of tapered rollers with angular contact and self-aligning behavior. So 30220/DF is a 30220 series bearing supplied as a pair, and 31306/DF is the same idea in the 31306 series. The suffix does not alter the dimensions of a single bearing; it defines how the two are ground and oriented to work together.

You will find this arrangement in steel mills, cement plants, mining equipment and machine tool shops. Typical positions include speed reducers, milling machine and lathe main spindles, rolling mill roll shafts, and gear transmission units. Because the pair takes radial and axial loads in both directions, it suits assemblies that call for rigidity and precision, such as bevel gearboxes and drive shafts.

Choosing a /DF set comes down to the loads the assembly will see, the rotational speed and the lubrication conditions. During mounting, the facing faces must be aligned correctly and the preload set so that clearance does not become excessive. Sealing and lubrication matter just as much: in dirty environments, add extra seals and use a high-viscosity lubricant. Heat removal also plays a role in service life, particularly at higher speeds.

On interchangeability, /DF bearings from SKF can be replaced by products from other makers that use a comparable opposed tapered pair layout, for instance /DB or /DF suffixes from other manufacturers. Dimensions and tolerances are not always identical, so confirm the full part number and technical data before substituting. MR Industrial Accessories can review interchangeability with you so performance is not affected.

To request a quote for an SKF tapered roller bearing with /DF designation, send the complete part number to MR Industrial Accessories by WhatsApp or email. The team responds promptly and can suggest equivalents or help you select the right option for the application.